H P 9 7 5 4 4 S HEWLETT PACKARD NO MORE PRODUCED Native| Translation ------+-----+-----+----- Form 5.25"/FH Cylinders 1447| | | Capacity form/unform 331/ 396 MB Heads 8| | | Seek time / track 16.5/ 3.5 ms Sector/track 56| | | Controller SCSI1 SINGLE-ENDED Precompensation Cache/Buffer 64 KB DUAL-PORTED Landing Zone Data transfer rate 1.600 MB/S int Bytes/Sector 512 4.000 MB/S ext SYNC Recording method RLL 2/7 operating | non-operating -------------+-------------- Supply voltage 5/12 V Temperature *C 50 | -40 65 Power: sleep W Humidity % 8 80 | 5 95 standby W Altitude km -0.305 3.048| -0.305 15.240 idle 22.0 W Shock g 5 | 30 seek 34.0 W Rotation RPM 4002 read/write W Acoustic dBA 50 spin-up W ECC Bit MTBF h 150000 Warranty Month 60 Lift/Lock/Park YES Certificates CSA,IEC380,IEC950,TUV,UL47... ********************************************************************** L A Y O U T ********************************************************************** HEWLETT HP 9754X INSTALLATION GUIDE PRELIMINARY EDITION JULY 1989 +---------------------------------------------------------+ 1 | +--------+Factory +1|XX | DON'T +--------+Test |||XX | USE! ++|XX | Terminator+1|XX | Packs |||XX J1 | ++|XX | +1|XX | |||XX | ++|XX | |+-J4 | || | | || | | |+-+1 | |+-1 | |XX | |XX J2 +---------------------------------------------------------+ 1 +-+-------------------------------------------------------------+-+ | | | | | | | | | | | | | | | | | | | | | | | | | +-------------------------------------------------------------+ | | O J3xxxFrame Ground O O | ++------------------------------------------------------------+--++ +++--J2---+ 4+1234567+ +---SCSI-Connector---J1-------------1+-+--++ | |1 2 3 4|::|:::::::| |XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX| | |-+-------+1-+---J4--+-++----------++----------++----------++-PCA-| +-- || +----------1+----------1+----------1 -+ +++ +------------+----------+ Synchronized Terminator Packs Spindle Pins ********************************************************************** J U M P E R S ********************************************************************** HEWLETT HP 9754X INSTALLATION GUIDE PRELIMINARY EDITION JULY 1989 Jumper Setting ============== J4 Option/Address Connector ---------------------------- The Option/Address connector located on the drive electronics/ controller PCA-A2 is a 7 pin-set connector used to establish the options and select SCSI address. The disk drive is shipped from the factory with a shorting jumper across all seven pin-sets. This sets up a SCSI address of 7, enables drive initiation of a Synchronous Data Transfer Request message, enable parity check, and activates auto spin up. If you remove any of the shorting jumpers, save them for future use. If lost, DO NOT remove aby shorting jumper for the factory test connector on the side of the PCA. CAUTION DO NOT REMOVE ANY SHORTING JUMPERS FROM THE FACTORY TEST CONNECTOR!!! +1+2+3+4+5+6+7+ |:|:|:|:|:|:|:| --+-+-+-+-+-+-+-+-- +----+--------------------------------------------------------------+ |Pin | FUNCTION (0 = OPEN, 1 = SHORT) | |Set | | +----+--------------------------------------------------------------+ |1 |RESERVED (Normally shorted) | +----+--------------------------------------------------------------+ |2 |Drive initiation of SDTR message | | |0 = inhibit initiation of SDTR message | | |1 = Enable initiation of Power On and Reset | +----+--------------------------------------------------------------+ |3 |Parity | | |0 = Parity checking is disabled | | |1 = Parity checking is enabled | +----+--------------------------------------------------------------+ |4 |Auto spin up | | |0 = Drive will not spin up until host sends start unit command| | |1 = Drive will automatically spin up on power on | +----+--------------------------------------------------------------+ |5-7 |SCSI address | | | PIN SETS | | |SCSI ID| 5 | 6 | 7 | | | |-------+-------+-------+-------+ | | | 0 | OPEN | OPEN | OPEN | | | | 1 | OPEN | OPEN | CLOSED| | | | 2 | OPEN | CLOSED| OPEN | | | | 3 | OPEN | CLOSED| CLOSED| | | | 4 | CLOSED| OPEN | OPEN | | | | 5 | CLOSED| OPEN | CLOSED| | | | 6 | CLOSED| CLOSED| OPEN | | | | 7 | CLOSED| CLOSED| CLOSED| | +----+--------------------------------------------------------------+ Synchronous Data Transfer Request (SDTR) ---------------------------------------- When pin-set 2 is shorted (1 position) the drive will initiate an SDTR message at power on and RESET. When open (0 position) the drive will not initiate an SDTR message. The drive will respond to a host- initiated an SDTR message whether this pin-set is open or shorted. Parity Option Setting --------------------- When pin-set 3 is shorted (1 position), the disk drive checks parity on commands and data. When open (0 position), the disk drive does not check for parity. Parity bits are generated whether this pin-set is open or shorted. Auto Spin Up Option ------------------- When pin-set 4 is shorted (1 position), the disk drive will auto- matically spin up at power on. If open (0 position), the drive will not spin up until the Initiator send a START UNIT command. When not in the auto spin up mode the drive will return "Not Ready" to all commands except REQUEST SENSE, INQUIRY, RESERVE, RELEASE, and START UNIT until the drive is ready for access. Terminator Resistor Packs ------------------------- The drive is shipped with three terminator resistor packs installed. The packs are located on the bottom of the drove electronics/ controller PCA-A2. When installing multiple drives on an SCSI channel, the packs must be removed from all but the last drive in the chain. The drives can be ordered from the factory with the packs re- moved. (When re-installing the packs, ensure that they are properly keyed into their connectors. Termination Power Source ------------------------ There are three orderable options for the +5V terminator power source: - The drive supplies the +5V to th eon-board terminators only. - The drive supplies the +5V to the on-board terminators and to pin 26 of the SCSI connector. - The host or initiator supplies the +5V to pin 26 of the SCSI connector for the on-board terminators. Synchronized Spindle Pins ------------------------- +2-4+ Pin 1 GROUND |o o| Pin 2 MASTER SYNC |o o| Pin 3 RESERVED -+1-3+--- Pin 4 SLAVE SYNC ********************************************************************** I N S T A L L ********************************************************************** HEWLETT HP 9754X INSTALLATION GUIDE PRELIMINARY EDITION JULY 1989 Notes on installation ===================== Drive mounting -------------- horizontally vertically +-----------------+ +--+ +--+ +------------------+ | | | +-----+ +-----+ | | | x | | | | | | | | x+----------------+x +-+-----------------+-+ | | | | | | ||x x|| +---------------------+ | | | | | | || x x || | | | | | | || x x || x x | | | | | | || x x || +------x------x-------+ | +-----+ +-----+ | || xx || +-+------x--x-------+-+ +--+ +--+ || x x || | xx | || x x || | x x | || x x || +---x--------x----+ |x x| x x x++----------------++x UNACCEPTABLE! UNACCEPTABLE! Never install PC board on the Top! Mounting Instructions --------------------- Do not mount the disk drive in a front down or back down position. Since each design installation of the product can be unique, the following information should be taken into consideration when mount- ing the product. The disk drive can be mounted on either side, or the bottom. Physical Mounting ----------------- Typically the disk drive is fastened directly to a hassis with 6/32 screws. Use the following mounting information. NOTE There are eight (8) threaded mounting holes (for 6/32 threads) on the disk drive: two on each side, and four on the bottom. - When mounted, the hardware must not protrude more than 3 mm (0.12 in.) beyond the disk drive frame. - Use 6/32 screws that are torqued to 10 inch pounds. - The bottom of the disk drive has exposed voltages. Allow at least 3 mm (0.12 in.) between the bottom of the disk drive and any electrical conducting surface. Shock and Vibration Sway Space ------------------------------ To meet the Shock and Vibration Specifications, allow at least 3 mm (0.12 in.) around the physical limits of the disk drive. This space may have to be adjusted for air flow to maintain temperature specifications. Airflow Requirements -------------------- Airflow is required to improve disk drive reliability. Better reliability will be achieved with lower operating temperatures. The disk drive can be cooled by either forced air of natural cooling. Forced air may be necessary if the disk drive is located within a cabinet or other enclosure. If forced air cooling is not used, the disk drive must be located such that internal heat is conducted away from the drive and no outside heat sources raise the operating temperature. As a guideline, the estimated front to back airflow to prevent exceeding the maximum operating temperature at a 50*C ambient temperature is 225 linear feet per minute. This is a function of the specific airflow pattern inside the cabinet where the disk drive is installed. This airflow estimate is to serve a guideline. As an additional guideline, the airflow should be adjusted to prevent the temperature of the critical components listed below from exceed- ing the maximum temperature specified. - U102, large custom VLSI package maximum case temperature is 80*C. - Head disk assembly (HDA) casting, left side maximum casting temperature is 60*C. J1 SCSI Connector ------------------ An unshielded 50-pin SCSI connector (J1) is located on the rear of drive electronics/controller PCA-A2. The physical construction and pin assignments for this connector conform to the SCSI specification for single-ended driver and differential driver configurations, J2 DC Power Connector ---------------------- The power connector (J2) on the rear of drive electronic/controller PCA-A2 provides connection for dc power used by the drive. +----------------------- | +------------+ +---- pin 1 +12V DC 5% | | 1 2 3 4 | | 1 pin 2 GND | +------------+ +-- pin 3 GND +------------------ pin 4 +5V DC 5% J3 Frame Ground Connector -------------------------- The frame ground connector (J3) provides the ground contact to the drive chassis. This is a Faston (R) type connector. Mating Connector Requirements ----------------------------- The nonshielded SCSI device connector shall be a 50-conductor connector consisting of two rows of 25 male pins with adjacent pins 2.54 mm (0.1 in.) apart. It is recommended that keyed connectors be used. The recommended mating connector manufacturer's part number are as follows: +-------------------------------+----------------------------------+ |Disk Drive Connector/Function |Recommended Mating Connector | +-------------------------------+----------------------------------+ |J1-SCSI Connector |3M 3425-6600 | |(single ended and differential)| | +-------------------------------+----------------------------------+ |J2-DC Power |AMP 1-480424-0 | +-------------------------------+----------------------------------+ |J3-Frame Ground |AMP 62187-1 | +-------------------------------+----------------------------------+ |J4-Options Connector |AMP 531220-3 | | Shorting Jumper |(7 supplied with the disk drive, | | |Manufacturer supplies rails of 10)| +-------------------------------+----------------------------------+ Cable Requirements ------------------ The disk drive adheres to the cabling requirements and limitations set forth in the ANSI SCSI specifications. Refer to the SCSI specifications for details. - Cables with a characteristic impedance of 100 ohm 10% are recommended for unshielded flat or twisted-pair ribbon cable. - Cables with a characteristic impedance of 90 ohms 10% are perferred for shielded cable. - To minimise discontinuities and signal reflections, do not use cable with different impedances on the same bus. - A minimum cable size of 28 AWG should be used to minimise noise effects and ensur eproper distribution of termination power. - Cables should be properly terminated. Single-ended Cable ------------------ For disk drives with single-end output, use the following cable information. - A 50-conductor flat cable or 25-signal twisted-pair cable should be used. Cable length shall be equal or less than 6.0 metres. This refers to internal and external cable length (except stubs). - A stub length of no more than 0.1 metre is allowed off the main line interconnection withim any connected device. Differential Cable ------------------ For disk drives with differential output, use the following cable information. - A 50-conductor flat cable or 25-signal twisted-pair cable should be used. Cable length shall be equal to or less than 25 metres. This refers to internal and external cable length (except stubs). - A stub length of no more than 0.2 metre is allowed off the main line interconnection within any connected device. ********************************************************************** F E A T U R E S ********************************************************************** HEWLETT HP 9754X INSTALLATION GUIDE PRELIMINARY EDITION JULY 1989 General Description ------------------- The HP9754XS (SCSI Single-Ended Interface) and the HP9754XD (SCSI High Performance Differential Interface) Disk Drives are reliable, low cost, high capacity, high performance, random access mass storage devices. Each product utilises sputtered thin-fim 5.25-inch disks as storage media. Each disk has 1457 tracks per surface. The total un- formatted capacity of the disk drives is 396.6 MB for 4-disk 97544S/D and 793.2 MB for the 8-disk 97548S/D. This translates to 331.9 and 663.8 MB formatted user capacity, respectively. Low cost, high capacity and reliability are achieved by the use of advanced electronics and by embedding the servo and data information on the same track. Embedded servo allows the same electronics to be used for both servo control and reading of user data; this results in reduced component count and lower overall drive cost. Embedded servo also greatly reduces head alignment problems and makes it possible to achieve an industry leadership with greater than 1600 tracks per inch. High performance (16.5 msec random average seeks) while still main- taining relatively low power is achieved by using a state-of-the-art Hewlett-Packard designed actuator. This sophisticated actuator design combines the performance benefits of a linear actuator with the reliability and cost benefits of the traditional rotary actuator. The disk drive electrical interface is compatible with the industry standard Small Computer System Interface (SCSI). The drive is identical to the 5.25-inch minifloppy in size and voltage require- ments. Key features of the HP 9754XS/D Disk Drives include: - High reliability (150,000 hours MTBF) - High performance embedded SCSI controller - Extensive use of HP's state-of-the-art VLSI processes - Fourth generation of Hewlett-Packard designed embedded servo mechanisms. - High performance Hewlett-Packard designed actuator Options ------- The following options are available: - Orderable with or without a front bezel - Orderable with or without a bottom cover - Orderable with or without terminator resistor packs - Orderable with or without a front panel LED indicator - Three terminator options: - The drive supplies +5V to the on-board terminators only - The drive supplies +5V to the on-board terminators, and to pin 26 of the SCSI Connector (J1) - The host or initiator supplies +5V to pin 26 of the SCSI Connector (J1) for the on-board terminators. Specials -------- For customer needs that differ from the products described in this manual, Hewlett-Packard can provide specially modified products. These modifications are ordered defined, engineered, and manufactured under "special" contract negotiations. Front Panel LED Indicator ------------------------- The light emitting diode (LED) indicator on the front of the disk drives displays the status of the power-on diagnostics. As the disk drive progresses through the diagnostics, the LED will present the following displays: 1. LED ON When poser is first applied, the power-on reset from the drive hard- ware illuminates the LED. Th eLED remains lit until extinguished by the microprocessor on the drive electronics/controller PCA-A2. If the LED remains on, a catastrophic failure has occurred. The most pro- bable cause is a failure of the drive electronics/controller PCA-A2. 2. LED OFF Once the servo processor has tested itself and its internal RAM, the LED is extinguished. The LED remains off for approximately 1 second, during which time the processor performs additional hardware tests and establishes various operating parameters. 3. LED ON The LED illuminates indicating that the spindle motor is being started. The LED remains lit until the spindle is up to speed. 4. LED FLASHES This indicates that the controller is performing its internal diagnostic tests. Because of the duration of these test, this LED pattern may not even be seen. If the LED continues to blink at a rate of 1 Hz, the controller has failed some portion of these tests. Once the power-on diagnostics have completed, the LED functions as an activity light. The LED will illuminated at any time the disk drive is executing a command, reading, or writing. If the LED is extinguished, the drive is idle. Serial Number ------------- Each drive carries a serial number. Keep a record of all serial numbers. If your drive is lost or stolen, the serial number is often necessary for tracing and recovery, as well as for insurance claims.